UNIVERSITY OF CALIFORNIA PUBLICATIONS 

 , Bulletin of the Department of Geology 



Vol. 3, No. 7, pp. 191-217, PI. 19 ANDREW C. LAWSON, Editor 



MINERALS FROM LEONA HEIGHTS, 

 ALAMEDA CO., CALIFORNIA 



BY 



Waldemar T,. Schaller 

 CONTENTS 



PAGE 



Introduction 192 



~ Pyrite 193 



General Description 193 



Crystallographic Characters 193 



Chemical Properties 194 



Chalcopyrite '. 194 



v Copper 195 



/ Melanterite 195 



General Description 195 



Crystallographic Characters 195 



Physical Properties 198 



Chemical Properties 198 



Pisanite 199 



General Description 199 



Crystallographic Characters 199 



Physical Properties 203 



•Chemical Properties 204 



^ Boothite 207 



General Description 207 



Crystallographic Characters 208 



Physical Properties 210 



Chemical Properties 210 



Chalcanthite 212 



General Description 212 



Crystallographic Characters 212 



Chemical Properties 213 



Copiapite 214 



General Description 214 



Chemical Properties '214 



Epsomite 216 



General Description 210 



Chemical Properties .' 216 



^iAlunogen 216 



Hematite and Limonite 217 



Summary 217 



